Machine for sewing looped fabrics



(No Model.) 2 Sheets-She-et 1.,

N. H. BRUCE. MACHINE POE SEWING LOOPED FABRICS.

3 437.14% Patented Sept. 23, 1890.

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(No Model.) 2 Sheets-Sheet 2'.

N. H. BRUCE. MACHINE FOR SEWING LOOPED FABRIGS.

No. 437,142. I PatentedSept; 23, 1 89-0.

1 UNITED STATES PATENT OFF-ICE.

NORMAN H. BRUCE, or WATERFORD, NEW YORK.

MACHINE FOR SEWING LOQPED FABRICS.

SPECIFICATION forming part of Letters Patent No. 437,142, datedSeptember 23, 1890.

Application filed March 1, 1888. SerialNo. 265,821. (Noinodeh) To allwhom it may concern..- Be it known that I, NORMAN ILBRUOE, a citizen ofthe United States, residing at Waterford, in the county of Saratoga andState of New York, have invented new and useful Improvements in BrushAttachments for Turning-Off Machines for Uniting Knit Fabrics, of whichthe following is aspecification.

My invention relates to that class of mechanism known ascylinder-turning-off machines, used for sewing together the two selvageedges of knitted fabrics or for securing together the cuffs and bodyportions of undershirts and drawers. .In mechanism of this type it iscustomary to place the loops of the fabric upon the grooved points orhooks of the cylinder, the attachment of the cuff being guided by theslack course formed in the manufacture of the fabric. The sleeve portionof the goods is then impaled upon the points, above which marginalportions of both fabrics project. The projecting edges are then trimmeddown either by hand or by automatic mechanism, the out being made soclose to the points that it severs the line of stitches engaging withthe loops impaled by the points, leaving the cut ends of the severedstitches still lying in the loops and upon the points. In order toremove these short fragments of the yarn, together with the adherentfuzzy or fibrous matters, it has been customary to ap-' ply a brushformed of strong bristles or wires, by the manual operation whereof thedesired result was effected. This method, however, not only involvesadditional time and labor, but the friction of the brush rapidly wearsaway the brass of the hook or point plate, thereby necessitating itsrenewal at com paratively frequent intervals and giving rise toconsiderable annoyance, interruption of work, and expense. The manualapplication of the brush also, unless made by an expert and faithfulemploy is very liable to effect an imperfect removal of the wasteparticles or to remove them from some portions and not from others.

It is my purpose, therefore, to combine with mechanism of the typespecified a mechanically-driven and adjustable brush having its supportsmounted at any suitable point and acting upon the edges of the fabricsengaged with the points or hooks of the cylinder before the parts reachthe sewing mechanism, and means for holding saidbrush to its work. It ismy further purpose to give to said brush a rotary movement, incombinationwith a lateral reciprocation, in the plane of the axis of thebrush-shaft, whereby the result sought is more speedily and thoroughlyeffected.

It is my purpose, also, to so construct and combine the several parts asto render the brush easily and instantly removable from contact with thecylinder to permit ready access to the sewing mechanism or forotherpurposes.

It is also an object of my invention to combine with acylinder-tnrning-off machine and a mechanically-driven brush simplemeans for imparting to the same an exact and delicate adjustment towardand from the work.

The invention consists in the several novel features of construction andnew combinations of parts, hereinafter fully described,and thendefinitely pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of acylinder-turning-oif machine with my invention attached. Fig. 2 is aside elevation taken from the right hand of Fig. 1. Fig. 3 is a verticalsection in the plane m, Fig. 2. Fig. 4 is a detail view showing aslightly-modified construction.

In the said drawings the reference-numeral l designates any suitablesupporting frame or stand, upon which is mounted the bed-plate 2 of aturning-off machine, having a cylinder 3, provided with a ring 4, uponwhich are mounted the hooks or points 5 in the usual manner. Anintermittent movement is imparted to the ring by a ratchet 6, with whicha pawl 7 has periodical engagement, said pawl being reciprocated by aneccentric on the shaft 8. The sewing mechanism consists of the needleand looper shown in Fig. 1, and having the ordinary construction.

Inasmuch as the turning-off machine forms no portion of my presentinvention, it will not be further described herein, the construction andoperation thereof being well known.

Upon any suitable support in convenient proximity to the cylinder 3, Iattach a bracket 9, having a stud-bearing 10. Upon this stud isjournaled a double pulley having the separate belt-grooves 12 and 13.The hub of this pulley is prolonged beyond the end of the stud andreceives a screw 1i, which passes into a groove 15 in the end of thebearing to hold the pulley in place.

Upon the extended hub 16 is mounted a sleeve or ring 17, having alug 1S,overhanging the end of the hub and provided with a cam-pin 19, the endof which lies in a camrace 20, out in the periphery of the hub, andhaving such obliquity that at each revolution of the pulley the sleeve17 will receive a reciprocating movement in a direction parallel withthe axis of the stud. Upon the sleeve is formed or mounted abraeket 21,having an opening in which is inserted an arm 22, adj ustablewithin thesleeve and held at an y point by a set-screw This-arm projects over thering 4, andupon its extremity is formed a stud 24:, upon which ismounted a rotary brush 25, having a pulley 26, which is geared by a belt27 to the pulley 12 upon the stud 10, the latter being driven by a belt28, running on the pulley 13 and actuated from the powershaft or in anyother suitable manner.

Beneath the arm 22 I place a post 29, having a female screw, in which ismounted a verticallyadjustable set-screw 30, having a head, upon whichthe arm 22 rests, and by which the screw may be adjusted. A spring 31,attached to the arm and to the support or table beneath, holds the brushdown to its work, and at the same time permits the easy adjustment ofthe screw 30. A loose pulley 32 may be mounted on the stud 10 to receivethe driving-belt when the operation of the brush is not required. Theparts being thus constructed and arranged, and the fabrics being inplace upon the points and properly trimmed, the mechanism is set inmotion. As the intermittently-moving point-ring rotates beneath thebrush 25, the latter revolves rapidly against the edges of the fabriclooped upon the points, and at the same time receives a rapid horizontalreciprocation in combination with its rotary movement. If properlyadjusted by means of the set-screw 30, the revolving brush will speedilyand theroughly remove the particles of thread and other adherentmaterial and leave the edges of the fabrics in a perfectly clean anduniform condition throughout.

I may for the purpose of imparting a horizontal reciprocation to thebrush use the construction shown in Fig. tin which a cam-race 33 is outupon a hub formed upon the brush, a cam-pin 34: being mounted upon thearm 22. It should be noted, however, that the combined rotary andreciprocating movement is not an essential feature of my invention, as Imay employ a brush having a rotary movement only, although I regard thecombined rotary and reciprocating movement as preferable, as it moreperfectly removes the severed ends of the thread or yarn and effects amore thorough cleansing of the fabrics.

I have shown the support for the brush mechanism as mounted upon thesame table, supporting the bed-plate of the turning-oil machine. Thelocation of the supportingbasket is, however, of no importance, and Imay place it upon any support and at any point where the brush may bebrought down upon the edges of the fabrics.

When access to the sewing mechanism is needed or when for other reasonsit is desirable to remove the brush, the spring 31 is detached and thearm 22 is lifted, the sleeve 1.7 turning upon the hub 16 of the pulley.The arm may swing through an arc of nearly one hundred and eightydegrees, thereby wholly removing the brush and its support from thevicinity of the turning-off machine. \Vings 35 are set upon the verticalface of the pulley on the brush, by the rapid revolution of which asuiiicient current of air is produced to carry oil the particles removedby the brush.

By this invention I am enabled to build the brush attachments separatelyas independent mechanism and supply them to the users of the turning-offmachines of any known pattern, to which they may be applied withoutchange or alteration of any kind.

My invention, also, is adapted for use with a straight-point plate aswell as with a ring.

What I claim is- 1. The combination, with a pointmarrylng cylinder of aturning-off machine, of a sup port, an arm mounted on said support andcarrying a revolving brush located above the points, said arm beingmovable at will to ad just the brush to or from the points, means forrevolving the brush, and a spring connected with the arm and acting tonormally hold the brush down upon the exposed trimmed edges of a fabricon the points, substantially as described.

2. The combination, with a cylinder-turning-off machine, of acontinuouslydriven brush, an arm carrying said brush at one end andhaving the other end mounted upon a horizontal axis arranged upon asupport adjacent t0 the cylinder, and a vertically-adjustable supportfor said arm, substantially as described.

3. The combination, with a cylinder-turning-off machine, of an armmounted at or near one end on a horizontal axis adjacent to thecylinder, a continuously-driven brush mounted upon the other end, overthe cylinderpoints, to act upon the trimmed edges of the fabric carriedby the latter, a vertically-adjustable SGlPSClGVV' supporting thebrush-earrying end of said arm, and a spring holding the latter incontact with the set-screw, substantially as described.

at. The combination, with a cylinder-turning-01f machine, of'an armmounted at one end upon a horizontal axis, abrush journalcd upon theother end of said arm and havinga pulley provided with wings to createan aircurrent, and means for driving said pulley and brush,substantially as described.

5. The combination, with a cylinder-turning-oflf machine, of a pulleyhaving'an extended hub rotating upon a suitable bearing, a sleeve orring loose upon the hub and having a pin engaging with a cam-racetherein, an arm longitudinally adjustable in a bracket on the sleeve,and a brush mounted on the free end of the arm, substantially asdescribed.

6. The combination, With a cylinder-turning-ofi machine, of a pulleyhaving an extended hub splined upon a suitable bearing, a sleeve or ringturning upon said hub and having a lug provided with a pin running in acam-race in said hub, an arm longitudinally adjustable in a bearingon aring, arotarybru sh having a pulley provided with Wings on its verticalface, an adjustable support for the arm, and a spring drawing the armdown upon the support, substantially as described. 20

7. The combination, with a cylinder-turning-ofi mechanism, of a supportadjacent to the cylinder provided with a journal, a revolving hubmounted on the journal and provided with a cam-race, an arm loose at oneend on the said hub and having a pin engaging the cam-raoe, and arotating brush journaled at the other end of the arm to act upon thetrimmed edges of the fabric carried by the cylinder, substantially asdescribed.

In testimony whereof I aflix my signature in presence of two Witnesses.

NORMAN H. BRUCE.

Witnesses:

Jos. L. OooMBs, J. A. RUTHERFORD.

